Application; General Ied Application - ABB Relion 670 Series Applications Manual

1MRK 511 401-UEN Rev. K
Section 2
2.1

General IED application

The Intelligent Electronic Device (IED) is used for the control, protection and monitoring of
different types of bays in power networks. The IED is especially suitable for applications in
control systems where the IEC 61850–8–1 Ed 1 or Ed 2 station bus features of the IED can be
fully utilized. It is used for station-wide interlocking via GOOSE messages and vertical client-
server MMS communication to a local station or remote SCADA operator workplace. This
supports the architecture with distributed control IEDs in all bays with high demands on
reliability. Redundant communication is obtained through the built-in PRP and HSR features
which can be used in star or ringbus architectures. The IED can be used on all voltage levels. It
is suitable for the control of all apparatuses in any type of switchgear arrangement.
The control is performed from remote (SCADA/Station) through the IEC 61850–8–1 Ed1 or Ed2
station communication or from the built-in multi-display local HMI. Cyber security measures
are implemented to secure safe autonomous operation of the protection and control
functions even if simultaneous cyber attacks occur. For all common types of switchgear
arrangements, there are different pre-configurations for control and interlocking. One control
IED can be used for single bay or multi-bay applications. The control operation is based on the
select-before-execute principle to give highest possible security. There are synchrocheck
functions available to assist optimal breaker closing at the right instance in synchronous as
well as asynchronous networks.
A number of protection functions are available for flexibility in use for different station types
and busbar arrangements. To fulfil the user's application requirements, the IED features, for
example, up to six instantaneous phase and earth overcurrent functions, 4–step directional or
non-directional delayed-phase and earth overcurrent functions, thermal overload and
frequency functions, two instances of 2–step under- and overvoltage functions, autorecloser
functions and several different measuring functions. This, together with the multi-display local
HMI that can show one or more pages per feeder allows using the IED for protection and
control for up to six bays in a substation.
The auto-reclose for single-, two-, and/or three-phase reclose includes priority circuits for
multi-breaker arrangements. It co-operates with the synchrocheck function with high-speed or
delayed reclosing. Several breaker failure functions are available to provide a breaker failure
function independent from the protection IEDs, also for a complete one- and a half breaker
diameter.
Disturbance recording and fault locator are available to allow independent post-fault analysis
after primary disturbances in case of a failure in the protection system.
Duplex communication channels for transfer of up to 192 intertrip and binary signals are
available on each remote-end data communication card (LDCM). Typical applications are the
communication between IEDs inside the station or with IEDs in a remote station as remote
I/O.
The IED can be used in applications with the IEC/UCA 61850-9-2LE process bus with up to
eight Merging Units (MU). Each MU has eleven analogue channels, four current and four
voltages and three T units. Conventional input transformer module and Merging Unit channels
can be mixed freely in your application.
Logic is prepared with a graphical tool. The advanced logic capability allows special
applications such as automatic opening of disconnectors in multi-breaker arrangements,
closing of breaker rings, load transfer logics and so on. The graphical configuration tool
ensures simple and fast testing and commissioning.
Bay control REC670
Application manual

Application

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Section 2
Application
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